Nick Kyrgios  

The ninth-seeded Russian Daniil Medvedev finished with an ace after saving break points in the final game, lifting a first Masters 1000 trophy after settling for runner-up finishes to Nick Kyrgios in Washington and Rafael Nadal in Montreal last weekend
 

 Nick Kyrgios received a warning for 'unsportsmanlike' behaviour after running into an argument with the umpire after serving under-arm twice in his match against Rafael Nadal 

USTA spokesman Chris Widmaier said Lahyani had gone 'beyond our protocol,' but would be allowed to continue to work matches during the US Open because of his 'exemplary track record as an international tennis official'

Some quick thinking from Swiss master Roger Federer helped him return Nick Kyrgios' blistering shots

Five-time US Open winner Federer beat Frenchman Benoit Paire to set up a third round clash against Nick Kyrgios.